When you enter the small gallery that initiates Phyllida Barlow’s wonderful exhibition of new, multifaceted work, you must negotiate the space-filling untitled (upturned house), a construction of wood and varnished panels that resembles a scrambled house resting on teetering foundations. And so it goes. Pressed up close to each of her works in the two-floor show, similarly large-scale sculptures in small confines, you notice the artist’s time-consuming transformation of lowly materials, one factor in maintaining an accessible feeling in imposing formats.